LG MJ07PC INSTALLATION INSTRUCTIONS

INSTALLATION MANUAL

AIR
CONDITIONER

www.lg.com

MFL67855543

Rev.03_032520

Copyright © 2018 - 2020 LG Electronics Inc. All Rights Reserved.

Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.

WALL MOUNTED
Original instruction

РУССКИЙ ЯЗЫК УКРАÏНСЬКА

ENGLISH

ITALIANO

ESPAÑOL

ҚАЗАҚ ТІЛІ

БЕЛАРУСКАЯ МОВА

FRANÇAIS

DEUTSCH

OʻZBEK TILI

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

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MODEL DESIGNATION

MODEL DESIGNATION

Product information

- Product Name : Air conditioner

- Model Name :

SQSM N B 015

- Additional Information : serial number is
refer to the barcode on the product.

- Refrigerant : R32 / R410A

Serial number

Chassis name

Indoor Unit / Outdoor Units

N : Indoor Unit
U : Outdoor Unit

Detailed product type only
for M- series models

AQ : Wall mounted Libero-R
SQ : Wall mounted Libero-E
AH* : ARTCOOL
AW* : ART COOL Mirror
AH : Ceiling Cassette
AHL : Ceiling Concealed Duct
(Low Static)
R : Refrigerant R32/R410A
PC : Standard plus (S)

Detailed product type for
U- / C- series models

L : Low Static
H : High COP
C : Econo
R : Refrigerant R32 / R410A

Nominal Capacity

Ex) 7 000 Btu/h Class → '07',
18 000 Btu/h Class → '18'

Product type

S : Wall mounted /
ARTCOOL mirror
J : Wall mounted
A : ARTCOOL
T : Ceiling Cassette
B, M : Ceiling Concealed Duct
V : Ceiling Suspended & floor
Q : Console
P : Floor Standing

Connectable Outdoor unit type

M : Indoor units only for

Multi systems

U : Indoor units only for

Single A systems

C : Common Indoor Unit for

Multi and Single CAC

Airborne Noise Emission

The A-weighted sound pressure emitted by

this product is below 70 dB.

** The noise level can vary depending on the
site.

The figures quoted are emission level and are
not necessarily safe working levels.

Whilst there is a correlation between the
emission and exposure levels, this cannot be
used reliably to determine whether or not
further precautions are required.

Factor that influence the actual level of
exposure of the workforce include the
characteristics of the work room and the other
sources of noise, i.e. the number of
equipment and other adjacent processes and
the length of time for which an operator
exposed to the noise. Also, the permissible
exposure level can vary from country to
country.

This information, however, will enable the
user of the equipment to make a better
evaluation of the hazard and risk.

Limiting concentration

Limiting concentration is the limit of Freon gas
concentration where immediate measures can
be taken without hurting human body when
refrigerant leaks in the air. The limiting
concentration shall be described in the unit of
kg/m3(Freon gas weight per unit air volume)
for facilitating calculation

Limiting concentration: 0.44kg/m3(R410A)

n Calculate refrigerant concentration

Refrigerant

concentration

(kg/m3)

Total amount of replenished
refrigerant in refrigerant facility (kg)

=

Capacity of smallest room where
indoor unit is installed (m3)

TIPS FOR SAVING ENERGY

TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

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For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

SAFETY INSTRUCTIONS

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SAFETY INSTRUCTIONS

The following symbols are displayed on indoor and outdoor units.

Read the precautions in this manual
carefully before operating the unit.

This symbol indicates that the
Operation Manual should be read
carefully.

The following safety guidelines are intended to prevent unforeseen risks or damage
from unsafe or incorrect operation of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations that can cause

!

risk. Read the part with this symbol carefully and follow the instructions in
order to avoid risk.

WARNING

!

This indicates that the failure to follow the instructions can cause serious
injury or death.

CAUTION

!

This indicates that the failure to follow the instructions can cause the
minor injury or damage to the product.

This appliance is filled with
flammable refrigerant (for R32)

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

WARNING

!

• Installation or repairs made by unqualified persons can result in
hazards to you and others.

• The information contained in the manual is intended for use by a
qualified service technician familiar with safety procedures and
equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can
result in equipment malfunction, property damage, personal injury
and/or death.

• Compliance with national gas regulations shall be observed.

Installation

• Always perform grounding.

- Otherwise, it may cause electrical shock.

SAFETY INSTRUCTIONS

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• Don’t use a power cord, a plug or a loose socket which is damaged.

- Otherwise, it may cause a fire or electrical shock.

• For installation of the product, always contact the service center or a
professional installation agency.

- Otherwise, it may cause a fire, electrical shock, explosion or injury.

• Securely attach the electrical part cover to the indoor unit and the
service panel to the outdoor unit.

- If the electrical part cover of the indoor unit and the service panel of

the outdoor unit are not attached securely, it could result in a fire or
electric shock due to dust, water, etc.

• Always install an air leakage breaker and a dedicated switching board.

- No installation may cause a fire and electrical shock.

• Do not keep or use flammable gases or combustibles near the air
conditioner.

- Otherwise, it may cause a fire or the failure of product.

• Ensure that an installation frame of the outdoor unit is not damaged
due to use for a long time.

- It may cause injury or an accident.

• Do not disassemble or repair the product randomly.

- It will cause a fire or electrical shock.

• Do not install the product at a place that there is concern of falling
down.

- Otherwise, it may result in personal injury.

• Use caution when unpacking and installing.

- Sharp edges may cause injury.

• The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an operating gas
appliance or an operating electric heater.)

• Two or more people must lift and transport the product. Avoid
personal injury.

• Do not use means to accelerate the defrosting process or to clean,
other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

• Be aware that refrigerants may not contain an odour.

• Keep any required ventilation openings clear of obstruction.

• The appliance shall be stored in a well-ventilated area where the room
size corresponds to the room area as specified for operation.

SAFETY INSTRUCTIONS

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• Refrigerant tubing shall be protected or enclosed to avoid damage.

• Flexible refrigerant connectors (such as connecting lines between the
indoor and outdoor unit) that may be displaced during normal
operations shall be protected against mechanical damage.

• A brazed, welded, or mechanical connection shall be made before
opening the valves to permit refrigerant to flow between the
refrigerating system parts.

• Mechanical connections shall be accessible for maintenance
purposes.

Operation

• Do not share the outlet with other appliances.

- It will cause an electric shock or a fire due to heat generation.

• Do not use the damaged power cord.

- Otherwise, it may cause a fire or electrical shock.

• Do not modify or extend the power cord randomly.

- Otherwise, it may cause a fire or electrical shock.

• Take care so that the power cord may not be pulled during operation.

- Otherwise, it may cause a fire or electrical shock.

• Unplug the unit if strange sounds, smell, or smoke comes from it.

- Otherwise, it may cause electrical shock or a fire.

• Keep the flames away.

- Otherwise, it may cause a fire.

• Take the power plug out if necessary, holding the head of the plug
and do not touch it with wet hands.

- Otherwise, it may cause a fire or electrical shock.

• Do not use the power cord near the heating tools.

- Otherwise, it may cause a fire and electrical shock.

• Do not open the suction inlet of the indoor/outdoor unit during
operation.

- Otherwise, it may electrical shock and failure.

• Do not allow water to run into electrical parts.

- Otherwise, it may cause the failure of machine or electrical shock.

• Hold the plug by the head when taking it out.

- It may cause electric shock and damage.

• Never touch the metal parts of the unit when removing the filter.

- They are sharp and may cause injury.

SAFETY INSTRUCTIONS

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• Do not step on the indoor/outdoor unit and do not put anything on it.

- It may cause an injury through dropping of the unit or falling down.

• Do not place a heavy object on the power cord.

- Otherwise, it may cause a fire or electrical shock.

• When the product is submerged into water, always contact the
service center.

- Otherwise, it may cause a fire or electrical shock.

• Take care so that children may not step on the outdoor unit.

- Otherwise, children may be seriously injured due to falling down.

• Use a vacuum pump or inert (nitrogen) gas when doing leakage test or
air purge. Do not compress air or oxygen, and do not use flammable
gases. Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

• Do not turn on the breaker or power under condition that front panel,
cabinet, top cover, control box cover are removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

• Turn off all devices that cause fire when the refrigerant leaks.,
ventilate the room (example : opening window or using ventilation
unit), and contact with dealer who you purchased the unit.

• The installation of pipe-work shall be kept to a minimum.

• When mechanical connectors are reused indoors, sealing parts shall
be renewed.(for R32)

• When flared joints are reused indoors, the flare part shall be re­fabricated.(for R32)

CAUTION

!

Installation

• Install the drain hose to ensure that drain can be securely done.

- Otherwise, it may cause water leakage.

• Install the product so that the noise or hot wind from the outdoor unit
may not cause any damage to the neighbors.

- Otherwise, it may cause dispute with the neighbors.

• Always inspect gas leakage after the installation and repair of product.

- Otherwise, it may cause the failure of product.

• Keep level parallel in installing the product.

- Otherwise, it may cause vibration or water leakage.

SAFETY INSTRUCTIONS

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• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorises their
competence to handle refrigerants safely in accordance with an
industry recognised assessment specification. (for R32)

• Wear adequate personal protection equipment (PPE) when installing,
maintaining or servicing the product.

• Pipe-work shall be protected from physical damage

• If anyone other than a licensed professional installs, repairs, or alters
LG Electronics air conditioning products, the warranty is voided.

- All costs associated with repair are then the full responsibility of the

owner.

Operation

• Avoid excessive cooling and perform ventilation sometimes.

- Otherwise, it may do harm to your health.

• Use a soft cloth to clean. Do not use wax, thinner, or a strong
detergent.

- The appearance of the air conditioner may deteriorate, change color,

or develop surface flaws.

• Do not use an appliance for special purposes such as preserving
animals vegetables, precision machine, or art articles.

- Otherwise, it may damage your properties.

• Do not place obstacles around the flow inlet or outlet.

- Otherwise, it may cause the failure of appliance or an accident.

• The appliance shall be stored so as to prevent mechanical damage
from occurring.

• Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of
other skilled personnel shall be carried out under the supervision of
the person competent in the use of flammable refrigerants. (for R32)

• Dismantling the unit, treatment of the refrigerant oil and eventual
parts should be done in accordance with local and national standards.

• Periodic (more than once/year) cleaning of the dust or salt particles
stuck on the heat exchanger by using water.

• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.

TABLE OF CONTENTS

2 MODEL DESIGNATION
3 TIPS FOR SAVING ENERGY
4 SAFETY INSTRUCTIONS
10 INTRODUCTION

10 Features

11 INSTALLATION PARTS
11 INSTALLATION TOOLS
12 INSTALLATION MAP
13 INSTALLATION

13 Select the best Location
15 Fixing Installation Plate
15 Drill a Hole in the Wall
16 Flaring Work
17 Connecting the Piping
21 Connecting the Cables
23 Checking the Drainage
24 Te s t Running
25 Heating Only Mode
27 SMART DIAGNOSIS (Optional)
28 Manual the decor, air filter Assembly & Disassembly

TABLE OF CONTENTS

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INTRODUCTION

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INTRODUCTION

Features

Air outlet

Air filter

Front grille
Signal receiver
Display

On/Off button

(Vertical louver & Horizontal vane)

Air deflector

Air Intake Vents

Air Outlet Vents

* The feature can be changed according to type of model.

Plasmaster Ionizer

Connecting
Wires

Piping

Drain Hose

Base Plate

NOTE

• When mechanical connectors are reused indoors, sealing parts shall be renewed.